In accordance with an exemplary embodiment, a cutoff duration estimation system for a vehicle includes a vehicle model module having a vehicle profile model of the vehicle, a front vehicle detection module having a front vehicle deceleration model operable to determine a rate of close between the vehicle and a front vehicle, and a cutoff duration estimation system operable to determine an amount of time an engine of the vehicle will be operating in an overrun condition based on the vehicle profile model and the front vehicle deceleration model.